from django.apps import AppConfig class CoreConfig(AppConfig): name = "core" def ready(self): from django.db.models.signals import post_migrate from django.core.signals import request_started from core.services.bootstrap import _on_post_migrate, _on_first_request # After every `manage.py migrate` run. post_migrate.connect(_on_post_migrate, sender=self) # On every server start, run the check lazily on the first incoming # request so the DB is guaranteed to be ready (avoids RuntimeWarning). request_started.connect(_on_first_request)